The largest one with a real kitchen and the others with smaller kitchenettes.You won't be able to permit those additional kitchens - as soon as you propose adding what looks like a kitchen facility, you'll get denied by the City. 

Simply using the wrong term may get you denied. 

Could be abuse or could be bad installation.

Is it possible that you are denied title insurance due to say an unrelenquished deed or something?

Providing these requirements to potential new tenants from the start will help to filter out less-than-ideal ones before they apply (they are denying themselves).

Co-op boards, in general, don't have the best track record with investors.Cons to co-ops:- House rules: Some boards only allow purchasers who will occupy the property- Flip tax: To disincentivize investors from flipping apartments, many co-ops have a 'flip-tax' upon sale of the unit requiring sellers to pay either a flat % of the sale price or a % of the profit from the sale. i.e. a building with a 25% flip tax will collect $200K from your flip (assuming you purchased at 1M and sold at 1.8M)- Board approval required: Most Co-op boards reserve the right to accept or deny board applicants.

While this sounds legitimate, the IRS and Tax Court has denied this position as investor activities and not real estate activities.

Due to the pandemic eviction moratoriums many investors that were denied writ of possession by the courts elected to sell to owner occupants. 

All I knew was that the last owner put up a wall and it was then called an official 2 bedroom to me by all parties and the appraiser seemed to go on what was listed online (we don't have a true MLS in NYC).I got a HELOC last year (to furnish an STR) and it was considered a 1 bedroom with office/den. I

Also next claim you try and file on the roof will be denied as they expected you to put on a new roof.